--- rpl/lapack/lapack/dlanst.f	2010/08/06 15:28:40	1.3
+++ rpl/lapack/lapack/dlanst.f	2016/08/27 15:34:28	1.14
@@ -1,9 +1,109 @@
+*> \brief \b DLANST returns the value of the 1-norm, or the Frobenius norm, or the infinity norm, or the element of largest absolute value of a real symmetric tridiagonal matrix.
+*
+*  =========== DOCUMENTATION ===========
+*
+* Online html documentation available at 
+*            http://www.netlib.org/lapack/explore-html/ 
+*
+*> \htmlonly
+*> Download DLANST + dependencies 
+*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dlanst.f"> 
+*> [TGZ]</a> 
+*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dlanst.f"> 
+*> [ZIP]</a> 
+*> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dlanst.f"> 
+*> [TXT]</a>
+*> \endhtmlonly 
+*
+*  Definition:
+*  ===========
+*
+*       DOUBLE PRECISION FUNCTION DLANST( NORM, N, D, E )
+* 
+*       .. Scalar Arguments ..
+*       CHARACTER          NORM
+*       INTEGER            N
+*       ..
+*       .. Array Arguments ..
+*       DOUBLE PRECISION   D( * ), E( * )
+*       ..
+*  
+*
+*> \par Purpose:
+*  =============
+*>
+*> \verbatim
+*>
+*> DLANST  returns the value of the one norm,  or the Frobenius norm, or
+*> the  infinity norm,  or the  element of  largest absolute value  of a
+*> real symmetric tridiagonal matrix A.
+*> \endverbatim
+*>
+*> \return DLANST
+*> \verbatim
+*>
+*>    DLANST = ( max(abs(A(i,j))), NORM = 'M' or 'm'
+*>             (
+*>             ( norm1(A),         NORM = '1', 'O' or 'o'
+*>             (
+*>             ( normI(A),         NORM = 'I' or 'i'
+*>             (
+*>             ( normF(A),         NORM = 'F', 'f', 'E' or 'e'
+*>
+*> where  norm1  denotes the  one norm of a matrix (maximum column sum),
+*> normI  denotes the  infinity norm  of a matrix  (maximum row sum) and
+*> normF  denotes the  Frobenius norm of a matrix (square root of sum of
+*> squares).  Note that  max(abs(A(i,j)))  is not a consistent matrix norm.
+*> \endverbatim
+*
+*  Arguments:
+*  ==========
+*
+*> \param[in] NORM
+*> \verbatim
+*>          NORM is CHARACTER*1
+*>          Specifies the value to be returned in DLANST as described
+*>          above.
+*> \endverbatim
+*>
+*> \param[in] N
+*> \verbatim
+*>          N is INTEGER
+*>          The order of the matrix A.  N >= 0.  When N = 0, DLANST is
+*>          set to zero.
+*> \endverbatim
+*>
+*> \param[in] D
+*> \verbatim
+*>          D is DOUBLE PRECISION array, dimension (N)
+*>          The diagonal elements of A.
+*> \endverbatim
+*>
+*> \param[in] E
+*> \verbatim
+*>          E is DOUBLE PRECISION array, dimension (N-1)
+*>          The (n-1) sub-diagonal or super-diagonal elements of A.
+*> \endverbatim
+*
+*  Authors:
+*  ========
+*
+*> \author Univ. of Tennessee 
+*> \author Univ. of California Berkeley 
+*> \author Univ. of Colorado Denver 
+*> \author NAG Ltd. 
+*
+*> \date September 2012
+*
+*> \ingroup auxOTHERauxiliary
+*
+*  =====================================================================
       DOUBLE PRECISION FUNCTION DLANST( NORM, N, D, E )
 *
-*  -- LAPACK auxiliary routine (version 3.2) --
+*  -- LAPACK auxiliary routine (version 3.4.2) --
 *  -- LAPACK is a software package provided by Univ. of Tennessee,    --
 *  -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
-*     November 2006
+*     September 2012
 *
 *     .. Scalar Arguments ..
       CHARACTER          NORM
@@ -13,48 +113,6 @@
       DOUBLE PRECISION   D( * ), E( * )
 *     ..
 *
-*  Purpose
-*  =======
-*
-*  DLANST  returns the value of the one norm,  or the Frobenius norm, or
-*  the  infinity norm,  or the  element of  largest absolute value  of a
-*  real symmetric tridiagonal matrix A.
-*
-*  Description
-*  ===========
-*
-*  DLANST returns the value
-*
-*     DLANST = ( max(abs(A(i,j))), NORM = 'M' or 'm'
-*              (
-*              ( norm1(A),         NORM = '1', 'O' or 'o'
-*              (
-*              ( normI(A),         NORM = 'I' or 'i'
-*              (
-*              ( normF(A),         NORM = 'F', 'f', 'E' or 'e'
-*
-*  where  norm1  denotes the  one norm of a matrix (maximum column sum),
-*  normI  denotes the  infinity norm  of a matrix  (maximum row sum) and
-*  normF  denotes the  Frobenius norm of a matrix (square root of sum of
-*  squares).  Note that  max(abs(A(i,j)))  is not a consistent matrix norm.
-*
-*  Arguments
-*  =========
-*
-*  NORM    (input) CHARACTER*1
-*          Specifies the value to be returned in DLANST as described
-*          above.
-*
-*  N       (input) INTEGER
-*          The order of the matrix A.  N >= 0.  When N = 0, DLANST is
-*          set to zero.
-*
-*  D       (input) DOUBLE PRECISION array, dimension (N)
-*          The diagonal elements of A.
-*
-*  E       (input) DOUBLE PRECISION array, dimension (N-1)
-*          The (n-1) sub-diagonal or super-diagonal elements of A.
-*
 *  =====================================================================
 *
 *     .. Parameters ..
@@ -66,14 +124,14 @@
       DOUBLE PRECISION   ANORM, SCALE, SUM
 *     ..
 *     .. External Functions ..
-      LOGICAL            LSAME
-      EXTERNAL           LSAME
+      LOGICAL            LSAME, DISNAN
+      EXTERNAL           LSAME, DISNAN
 *     ..
 *     .. External Subroutines ..
       EXTERNAL           DLASSQ
 *     ..
 *     .. Intrinsic Functions ..
-      INTRINSIC          ABS, MAX, SQRT
+      INTRINSIC          ABS, SQRT
 *     ..
 *     .. Executable Statements ..
 *
@@ -85,8 +143,10 @@
 *
          ANORM = ABS( D( N ) )
          DO 10 I = 1, N - 1
-            ANORM = MAX( ANORM, ABS( D( I ) ) )
-            ANORM = MAX( ANORM, ABS( E( I ) ) )
+            SUM = ABS( D( I ) )
+            IF( ANORM .LT. SUM .OR. DISNAN( SUM ) ) ANORM = SUM
+            SUM = ABS( E( I ) )
+            IF( ANORM .LT. SUM .OR. DISNAN( SUM ) ) ANORM = SUM
    10    CONTINUE
       ELSE IF( LSAME( NORM, 'O' ) .OR. NORM.EQ.'1' .OR.
      $         LSAME( NORM, 'I' ) ) THEN
@@ -96,11 +156,12 @@
          IF( N.EQ.1 ) THEN
             ANORM = ABS( D( 1 ) )
          ELSE
-            ANORM = MAX( ABS( D( 1 ) )+ABS( E( 1 ) ),
-     $              ABS( E( N-1 ) )+ABS( D( N ) ) )
+            ANORM = ABS( D( 1 ) )+ABS( E( 1 ) )
+            SUM = ABS( E( N-1 ) )+ABS( D( N ) )
+            IF( ANORM .LT. SUM .OR. DISNAN( SUM ) ) ANORM = SUM
             DO 20 I = 2, N - 1
-               ANORM = MAX( ANORM, ABS( D( I ) )+ABS( E( I ) )+
-     $                 ABS( E( I-1 ) ) )
+               SUM = ABS( D( I ) )+ABS( E( I ) )+ABS( E( I-1 ) )
+               IF( ANORM .LT. SUM .OR. DISNAN( SUM ) ) ANORM = SUM
    20       CONTINUE
          END IF
       ELSE IF( ( LSAME( NORM, 'F' ) ) .OR. ( LSAME( NORM, 'E' ) ) ) THEN